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Elektrolit kuat = Q
Elektrolit lemah= P
non elektrolit = R
B
Garam=Q
Amonia=P
Urea=R
2A.
2KClO₃ => 2KCl + 3O₂
|_|_______| |
|____________|
KClO₃ => KCl (+5 => -1 )
KClO₃ => O2 (+2 => 0 )
oksidator=KClO₃
Reduktror=KClO₃
B.
2MnO₄⁻ + 3S²⁻ + 4H₂O => 2MnO₂ + 3S + 8OH⁻
|_______|_____________| |
|____________________|
MnO₄⁻ => MnO₂ (+7 => +4)
S²⁻ => S (-2 => 0)
oksidator = MnO₄⁻
Reduktor = S²⁻
3A. Timah(IV) klorida
B. Magesium fosfat
C. Dinitrogen Pentaoksida
D. Sulfur tetraoksida
4.
MgO + H₂SO₄ => MgSO₄ + H₂O
Mol MgSO4 = 60/120 = 0,5 mol
karena perbandingan koefisien, maka mol MgSO₄ = mol MgO = 0,5 mol
massa MgO = 0,5 . 40 = 20gr
5.
A.
CH3 CH3
| |
CH₃-C-CH-CH-CH₂-CH₂-CH₃
| |
CH3 C2H5
B.
CH₃
|
CH₃-C=CH-CH₂-CH₃
|
CH₃
C.
CH≡C-CH-CH₂-CH₃
|
CH₃
D.
CH₃-C≡C-CH-CH-CH₃
| |
CH₃ CH₃